Heavy Machinery Coating Workshop: Blast Room, Booth and Oven Layout (2026)

Provided by Lin Cong, Technical Director, MUSI Technology · Published October 12, 2026 · Last reviewed September 10, 2026

Risposta rapida: Heavy machinery is coated in batch cells, not on a conveyor line, because parts are too large and too varied. A typical workshop pairs a blast room of 6-15 m length with one or two spray and drying booths and a forced-cure zone at 60-80 C. Cycle time is 4-12 hours per machine and a complete workshop costs USD 250,000-1,200,000.

Why is heavy machinery different?

Three constraints rule out a conventional line. Parts weigh 2-40 tonnes so overhead conveying is impractical. Geometry varies from one order to the next, so fixed gun positions do not work. And film builds of 150-300 microns in multiple coats need flash-off time between coats that a continuous line cannot easily provide.

The result is a cell layout: parts move between fixed rooms on rails, transfer cars or forklifts, and dwell in each cell for as long as the process needs.

What cells does the workshop need?

Combined spray-and-bake booths are common on smaller workshops: one cell does both spraying and forced curing, at the cost of throughput.

How do you size the blast room?

What cycle time should you plan for?

Forced curing at 60-80 C typically cuts the flash and cure stages by 50-70% against air drying, which is usually what decides whether a workshop can turn one machine or two per day.

Which layout works best?

Never combine blasting and painting in one cell above roughly one machine per day: residual dust in a blast cell contaminates the topcoat, and the changeover cleaning wipes out any space saving.

What does a heavy machinery coating workshop cost in 2026?

Why source a heavy machinery coating workshop from MUSI Technology?

MUSI Technology (Changzhou Musi Environmental Technology Co., Ltd.) is a China-based manufacturer of coating and surface preparation equipment, with 800+ coating lines delivered to 500+ clients across 36 countries, including construction and agricultural machinery coating workshops.

• Blast rooms, large spray and bake booths, dust collection and VOC treatment supplied as one package.
• Cell sizing calculated from your largest machine envelope and target machines per day.
• Le configurazioni standard vengono spedite in 30-60 giorni con una garanzia di 12 mesi sull'intera macchina e 36 mesi sui componenti critici. Le parti strutturali sono coperte da garanzia fino a 60 mesi.
• Ogni linea è progettata in base a una specifica di prestazione scritta. La velocità della linea, il profilo di polimerizzazione, lo spessore del film e il livello di emissione sono indicati nel contratto e dimostrati sul vostro pezzo durante la prova in fabbrica prima della spedizione.
• Un unico team di ingegneri gestisce l'intera catena — pretrattamento, applicazione, polimerizzazione, trasporto e controllo delle emissioni — così i compromessi tra queste fasi vengono risolti in fase di progettazione, non sul pavimento della vostra fabbrica.

MUSI collabora con produttori che considerano la finitura superficiale parte integrante del prodotto, non l'ultimo passo prima dell'imballaggio. Questo cambia l'oggetto del primo colloquio: disegni dei particolari, obiettivi di produttività e lo standard rispetto al quale il vostro cliente effettua gli audit, non un numero di modello. Cambia anche ciò che accade dopo la messa in servizio, dove la messa a punto del processo, la formazione degli operatori e il supporto per i ricambi proseguono per tutta la vita operativa della linea.

Vedi il heavy machinery coating solutions e il construction equipment coating workshop case study.

Domande frequenti

Can heavy machinery be coated on a conveyor line?

Rarely. Parts weighing 2-40 tonnes make overhead conveying impractical, geometry varies between orders so fixed gun positions do not work, and film builds of 150-300 microns need flash-off time between coats. Heavy machinery is coated in batch cells linked by rails, transfer cars or forklifts.

How big does a blast room for heavy machinery need to be?

Take the largest machine and add 1.5-2.0 m clearance on each side and 1.5 m above, so operators can reach every surface. Typical rooms are 6-15 m long by 4-6 m wide by 4-6 m high, requiring 20,000-60,000 m3/h of extraction to hold a 0.4-0.6 m/s cross-draft.

How long does it take to coat one machine?

Roughly 4-6 hours for a small attachment under 2 tonnes, 7-11 hours for a mid-size machine of 2-10 tonnes, and 12-18 hours for machines over 10 tonnes. Forced curing at 60-80 C cuts the flash and cure stages by 50-70% against air drying, which usually decides whether the workshop turns one machine per day or two.

Should blasting and painting share the same cell?

Only below about one machine per day. Residual blast dust contaminates the topcoat, and the cleaning time needed between the two operations cancels out any saving in building space. Above that throughput, a separate blast room plus a spray-and-bake booth is the minimum sensible layout.

What coating system is used on construction machinery?

Typically shot blasting to Sa2.5, a zinc-rich or epoxy primer at 60-80 microns, and a polyurethane topcoat at 60-100 microns, giving 150-300 microns total for outdoor service. Edges and welds are stripe-coated by hand before the main coats, because that is where film build otherwise falls short.

What does a heavy machinery coating workshop cost?

Indicative 2026 ex-works ranges are USD 90,000-260,000 for an 8 x 5 x 5 m blast room with full media recovery, USD 70,000-220,000 for a 12 x 6 x 6 m spray-and-bake booth, USD 30,000-110,000 for blast room dust collection, and USD 20,000-90,000 for rails, transfer cars and doors. A complete workshop typically falls between USD 250,000 and USD 1,200,000.

Informazioni sulle figure in questa guida. Gli intervalli di prezzo sono stime ex-works Cina compilate a settembre 2026 dalle quotazioni di progetto di MUSI Technology e sono forniti solo a scopo di budget; un prezzo fermo dipende dall'inviluppo del pezzo, dalla produttività e dai requisiti di conformità locali. I dati sulle prestazioni sono valori tipici per apparecchiature correttamente specificate e correttamente utilizzate, non garanzie. Laddove una certificazione o un dato specifico del cliente non potesse essere verificato, è contrassegnato per conferma anziché dichiarato. Ultima revisione: 9 settembre 2026.